Feed mechanism for wood-planers.



H. A. PERKINS. FEED MECHANISM FOR WOOD PLANBRS.

91 6,934. APPLICATION I'ILED NOV. 30,1908. Patented Mar- 30 2 SHEETS-SHEET 1.

H. II

.III MVVY S E 5 S E N W w ATTORN EV WITNESSES H. A. PERKINS.

FEED MEGHANISM FOR WOOD PLANERS. APPLIGATION-IILED NOV.30.1908.

Patented Mar. 30, 1909.

2 SHEETS-SHEET 2.

INVENTOR ATTORNEY UNITED sTAtr ss PATENT OFFICE.

HIRAM A. PERKINS, OF ROCHESTER, NEW YORK, ASSIGNOR TO AMERICAN WOOD WORKING MACHINERY (30., OF ROCHESTER, NEW YORK, A CORPORATION OF PENNSYLVANIA.

FEED MECHANISM FOR WOOD-PLANERS.

Specification of Letters Patent.

Application filed November 80, 1908.

Patented March 30, 1909.

Serial No. 465,807.

To all whom it many concern:

Be it known that I, HIRAM A. Pnnmns, of Rochester, New York, have invented a new and useful Feed Mechanism for Wood- Planers, of which the following is a specification.

My invention relates to a new method of mounting and operating the feed rolls of a wood planin machine and to a novel arrangement 0 gearing for the same, and it consists in such a construction of the parts and disposition of the gearing as to produce the results hereinafter described and not heretofore obtainable. A

In the accompanyingdrawing Figure 1 is a side elevation of my invention; Fig. 2 is a sectional elevation at right angles to Fig. 1. Fig. 3 is a plan View; Fig. 4 is a section parallel to Fig. 1. Fig. 5 is a detail.

A A, Figs. 1 and 2, represent the flaming of a wood planer, upon which are supported roll stands M and P. Shafts C and D pass through these roll stands and extend across the machine, the lower one having bearings in bushings 18, secured in the roll stands: the upper shaft D has bearings in a sleeve or quill 19, which extends across the machine parallel with shaft C, and is secured at both ends iii the roll stands in a suitable manner. Upon this sleeve are hinged roll yokes N N, each having suitable boxes 20, for carrying the rolls F G. The yokes N N are free to adjust vertically about the hinge-sleeve 19, and may be held down by Wei "hts or springs in any suitable manner. The ower rolls E H are journaled in boxes 7, suitably supported on the frame A.

The construction above described is not new, being in common use on machines of this kind. Instead, however, of placing the gears for driving the feed rolls in the usual positions overhanging or projecting outsid of the frame of the machine, I locate all the gearing approximately or quite inside of the. vertical outline of the frame.

' Referring to Figssl and 2, first feed shaft B carries a pinion 1, meshing into the master gear 2, which is keyed to the lower operating shaft C, inside the frame A. Roll stand M is recessed in one side so as to receive the transit or conveying gears 5-and6 connecting the two shafts C and D, time using the space for gearing heretofore occupied by the roll stand or the machine frame. 8 and 11 are gears considerably larger in diameter than the rolls, and they are keyed to the lower roll shafts inside of the frame A. A pinion 3, keyed to shaft C, meshes into both gears as indicated in. dotted lines in Figs. 1 and 4. 9 and 10 are similar gears secured to the shafts of upper rolls F and G, outside of the boxes 30, and therefore not in the same plane of rotation as gears 8 and 11, thus permitting the upper gears to pass the lower when the rolls are running near together. A pinion 4, on shaft D, drives both upper rolls similarly to the lower rolls. table or stock support, and I, Figs. 2 and 4, the central guide support or bridge.

It will be observed that gears 9 and 10 overhang the frame but very little, and this might still be reduced if desirable; but as a matter of fact the slight rojection shown in Fig. 2 is not objectionab e in view of the results obtained by the novel arrangement of gearing described, viz; on account of the compactness of the gearing transversely to the machine frame, I am enabled to run the belts T, driving the surfacing cylinders 15, in the space heretofore occu ied b gearing, thus permitting the cylinc er ul eye to be located close to the boxes 21, ig. 3, and the boxes in turn can thus be brought close to the ends of the cutting knives. By this means the steadiness of the cylinder and the rigidity of its bearings are greatly increased, and the quality of the surfacin correspondingly improved: furthermore by reason of the arrangement of the feed roll gearing in three trains, in addition to the master gear 2 and pinion 1, I am enabled to distribute the tooth strains so that the pressure on any one tooth is never more than what is necessary to drive one feed roll; for instance, gears 9 and 10 are both driven by pinion 4 on opposite sides of the center, whereby different teeth are engaged with each roll gear at the same instant; similarly gears 5 and 6, while actually moving two feed rolls, sustain tooth pressure of less than that required b one roll, because the ratio of gears 5 ant 4 is about two and one-half to one; furthermore in all the driving gears the strain is transmitted from the shaft to the pitch circumference of the gear, and in all receiving gears vice versa; therefore no gear receives and delivers strain circumferentially, and consequently gearing arranged according to my 17 indicates the in-fced system is practically indestructible, so far as breakage caused by tooth pressure is concerned. tect the gearin and avoid accidents outside sources provide casings or housings which cover the gears completely. J, Figs. 2 and 5, is a casin covering the master gear 2 and pinion 1, an made in sections so as to be readily attached'after the gearing is in place; it 18 secured to the machine by means of a rojecting flange arranged to be bolted to a edge 22, Figs. 2 and 3 on the roll stand M. On the roll stand M, l-provide a cover 23, which is bolted in place over the recess in which gears 5 and 6 are located. Over the lower roll gears 8 and 11, I provide a casing K, which is also made in sectionsso as to be bolted together around the ears, and is securel bolted against the ace of the roll stan l; as shown at 13, in Fig. 2. This casing also covers the driving pinion 3. F or the upper roll ears a-corres onding cover L 18 provided w 'ich musteit er be attached to the roll yokes N N, so as torise and fall with the gears, or if made stationary like casing K, must be made large enou h internally to accommodate such vertica movement of the gears 9 and 10. All of these casings are machine fitted in all the joints and at points of attachment to the machine, so that theyare dust proof and come into accurate relation with all the contiguous parts of the machine. Thus it will be seen that the gearing Within the machine frame is absolutely rotected from splinters, broken lumber or c ips, and

the on side gears protected from shavin s, dust or other accidental interference, and t e machine made safe for operator and workman.

It is necessary in machines of this kind to have a ide su ort or bridge between the lower r0 ls, to w rob the side guide is usually attached. I therefore provide such a bridge IBFigs. 2 and 4. As one method of securin t is ridge in position, flanges 26 are forms at both ends and fitted to dro in between the casings J and K, to which t e flanges are securely olted. By this means the casings are rigidly secured ,to ether, and the bridge firmly attached to t e machine. Substitutes for the flanges 26 might be devised, but they would not change the character of the device. In this connection it will. be noted that the roll stand P is not bodily vertically over the frame A, but is ofiset toward the center of the frame from a point just above the bearing of the shaft C, and the object of the offset is to provide space within the vertical outline of said frame for the location of the roll gears 9 and 10. This construction in connection with the recess in the roll stand M, to receive the transit gears5 and 6, is an im ortant point in my invention.

In or er to assemble the gear casings after the gears are in place I make them in suitable 11 order, however, to further ro-. mm

the roll stand P by .bolts throng 4. K is made in six parts,- and al sections can be bolted to ether by means of lugs 24, the uppereentra section S bein secured to one wall, and the bridge I bolted to the opposite wall, as before mentioned. Similarly. casing J is made in four parts held together by lugs and bolts 25, Fig. 5. These ear casings thus become a part'of the mac ine independent of their protectin function for the gearing.

I do not Wis to be confined to the exact sectional division of the gear casings shown and described, as other means of applying them might be devised which would not change the character of my invention.

What I claim-as m invention and desire to secure by Letters atent is:

1. In a wood planing machine, upper and lower feed rolls, power receiving gears on each roll, said lowergears not being in same plane of rotation as theupper ones, upper and lower operating shafts with one pimon each to drive said roll ears, independent transit gears connecting t e operating shafts, whereby all strain is distributed from the center of each gear to the pitch circumference, or vice versa, and the pressure on any single tooth is never more than that required to rive one feed roll.

2. In a wood planing machine, upper and lower feed rolls, power receiving gears on each roll, said lower feed roll gears not being in the same plane of rotation as the upper ones, operatingshafts with one inion each to drive said roll ears, indepen ent transit gears connecting t e o crating shafts, all of said gearing being coated substantially within the exterior vertical outlines of the machine frame, for the purposes set forth.

3. In a wood planing machine, upper feed rolls, power receiving ears on each roll, lower feed rolls with s1m1 ar gears, but out of the plane of rotation of the upper ones, upper and lower operating-shafts with one pinion ead'a to drive said roll ears, independent transit gears connecting t e operating shafts a master gear on one operating shaft located within the frame of the machine, and a pinion and shaft to drive the same, for the purposes set forth.

4. In a wood planing machine, lower feed rolls with receiving gears located between the bearings, upper feed rolls with gears attached outside the bearings, separate driving pinions on separate 0 crating shafts for upper and lower rolls, w 'ch shafts are connected by independent transit gears, a master. gear located between the hearings on one of the operating shafts, all of said gearing being 10- driving the lower feed rolls located within the machine frame, covers or housi for such ears, provision on the housings or attach-.

them to a' rigid part of the machine, and

or att cated substantially within the exterior verti cal outlines of the machine frame, for the purposes set forth.

5. In a wood planing machine, a roll stand m or support arranged to carry bearings for roll 1 0t ier provision aching bridges or cross drivin shafts, gears on said shafts, a recess girths to said housings where required. in sai roll stand to receive and cover said 8. In a wood planing machine, up er and gears, whereby the plane of rotation of the lower feed rolls, gearin for driving t e same gears is within, or a proxiinatel within the located substantially within the vertical outvertical outline of t 1e machine rame. line of the machine frame, protecting casin 6-. In a wood planing machine, a pair of for said gears made in sections, so as to E: roll supporting stands made to receive bearconvenient for assembling after the gearing ings for roll driving shafts, one of such stands is' in place, said casings having provision for being recessed to receive and cover gcars on I securing them rigidly to a contiguous part of said shafts, and the other stand offset inward the machine. with reference to {the machine frame to give l space for roll driving gears within the vertical outline of the machine frame, or nearly so, for the purposes set forth. f

7. In a wood' planing machine, gears for HIRAM A. PERKINS.

\Vi tnesses F. H. CLEMENT, G. C. SQUTHARD. 

